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stepladder [879]
3 years ago
15

Find the lengjth of the missing figure.x=__cm​

Mathematics
1 answer:
miv72 [106K]3 years ago
3 0

Answer:

X = 16 cm

Step-by-step explanation:

Pythagoras law is :

20^2 = X^2 + 12^2

400 = X^2 +144

400 - 144 = x^2

256 = x^2

x = ( 256 ) ^1/2

X=16

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Population in 1990 was 134 million. In 2000 it was 139 million. What was it in 2014
mihalych1998 [28]
Well first lets find the ROC (rate of change) in the sets of data.
1990 -> 134
2000 -> 139

so lets find the difference from the years given
2000-1990=10  so there is a 10 year gab
139-134=5  so there is a 5 million increase in the population 

so divide 10 by 5 which gives us 2, so every year there is a 2 million increase in the population. so from 2000 to 2014 there is 14 years, so 
14 x 2= 28, then add that to the latest population data
139+28=167
so the population in 2014 would be 167 million 

Hope this helped!!
7 0
4 years ago
Help me with math pls ❤️ it will mean a lot to me.
Keith_Richards [23]
7/6

Hope this helps!!!!
6 0
3 years ago
Read 2 more answers
2x+3y=41 and 5x+4y=85
Sever21 [200]

Answer:

5x+4y=85-

 Slope = -2.500/2.000 = -1.250

 x-intercept = 85/5 = 17

 y-intercept = 85/4 = 21.25000

2x+3y=41-

 Slope = -1.333/2.000 = -0.667

 x-intercept = 41/2 = 20.50000

 y-intercept = 41/3 = 13.66667

5 0
4 years ago
A fish population in a lake decreases by 2% each year. What is the common ratio? (Write your answer as a decimal)
galina1969 [7]

Answer:

the common ratio is 0.98.

Step-by-step explanation:

A fish population in a lake decreases by 2% each year. We are asked to find the common ratio.

The decrease of population of fish 2% annually means the population becomes next year 100% - 2% = 98%

Therefore, the common ratio would be 98%. Upon converting 98 percent to a decimal we will get,

98% = \frac{98}{100}=0.98

Therefore, the common ratio or decay factor is 0.98.

8 0
3 years ago
You invest $600 in an account that has a annual interest rate of 7%, compounded quarterly for four years. What is the equivalent
alexandr402 [8]

Answer:

  • equivalent rate: 7.186%
  • compounded 16 times

Step-by-step explanation:

The equivalent interest rate is the rate that would have to be applied so it would earn the same amount in 1 year. It is computed from ...

  requiv = (1 +r/n)^n -1

  requiv = (1 +0.07/4)^4 -1 ≈ 7.186%

__

"Compounded quarterly" means interest is compounded 4 times per year. In 4 years, it will be compounded 4·4 = 16 times.

__

The balance in the account after 4 years is ...

  $600·(1 +.07/4)^(4·4) ≈ $791.96

6 0
3 years ago
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